Rich DiFlorio Collection
Colt Service Model Ace Serial Number
SM1305 - This SM Ace serial number SM1305 has matching
slide. It was inspected by Charles S. Reed (CSR). SM1305
was shipped on November 25, 1940 to Springfield Armory,
Springfield, MA in a 100 gun shipment.
The initials of Major Charles S. Reed, Officer in
Charge of Outside Inspection, were stamped on all M1911A1
pistols and some Service Model Ace pistols manufactured in
1940-41, signifying government acceptance of the pistol.
His initials were stamped on the left side of the receiver
below the slide stop in accordance with Ordnance drawings.
It is also stamped on the top of the receiver near the
disconnector hole with a "G". On the C.S.R. inspected
M1911A1 pistols, the mark near the disconnector is an "R" in
Left side of Service Model Ace SM 1305.
Close-up of serial number and trigger area.
Right side slide markings "COLT SERVICE MODEL ACE .22 LONG
Right profile of Stevens Sight
Top view of Stevens Sight.
Matching serial number 1305 under firing pin stop on the
rear of the slide. Notice the lower groove to accommodate
the lug present on the bottom of the firing pin.
Floor place markings on the base of the two-tone magazine
"COLT" over "22 ACE L.R." over "SERVICE MODEL"
Right side of two-tone magazine. Groove for loading button
is diagonal, unlike the groove for the loading button on the
standard Ace magazine which is parallel to the body of the